trunk/masters-pmf/java_speed_test/c/main.c

   1 #define _LARGEFILE_SOURCE
   2 #define _FILE_OFFSET_BITS 64
   3
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <fcntl.h>
   7 #include <unistd.h>
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12
  13 int main(int argc, char **argv)
  14 {
  15         int result;
  16         FILE *fp;
  17         int print = 0;
  18
  19         if(argc >= 2 && !strcmp(argv[1], "-p"))
  20                 print = 1;
  21
  22         fp = fopen("../trace.dat", "r");
  23         if(fp == NULL) {
  24                 perror("fopen");
  25                 return 1;
  26         }
  27
  28         while(1) {
  29                 unsigned long timestamp;
  30                 unsigned short id;
  31                 unsigned char arglen;
  32                 char *args;
  33
  34                 fscanf(fp, "%4c", &timestamp);
  35                 if(feof(fp))
  36                         break;
  37
  38                 fscanf(fp, "%2c", &id);
  39
  40                 fscanf(fp, "%1c", &arglen);
  41
  42                 args = malloc(arglen);
  43
  44                 // manually specify length of args
  45                 fscanf(fp, "%15c", args);
  46
  47                 unsigned short arg1;
  48                 char *arg2;
  49
  50                 arg1 = *(unsigned short *)args;
  51                 arg2 = args+2;
  52
  53                 if(print)
  54                         printf("timestamp %lu id %hu args=(arg1=%hu arg2=\"%s\")\n", timestamp, id, arg1, arg2);
  55
  56                 free(args);
  57
  58         }
  59         fclose(fp);
  60
  61         return 0;
  62 }